Binary crystals in two-dimensional two-component Yukawa mixtures

Abstract

The zero-temperature phase diagram of binary mixtures of particles interacting via a screened Coulomb pair potential is calculated as a function of composition and charge ratio. The potential energy obtained by a Lekner summation is minimized among a variety of candidate two-dimensional crystals. A wealth of different stable crystal structures is identified including $A,B,A{B}_2,A_{2}B,A{B}_4$ structures [$A$ $(B)$ particles correspond to large (small) charge.] Their elementary cells consist of triangular, square or rhombic lattices of the $A$ particles with a basis comprising various structures of $A$ and $B$ particles. For small charge asymmetry there are no intermediate crystals besides the pure $A$ and $B$ triangular crystals.

RevTeX 4 - 17 pages - 6 main figures

References in corpus (14)

• Colloidal glass transition observed in confinement
• Effective forces in colloidal mixtures: from depletion attraction to accumulation repulsion
• Shear viscosity of two-dimensional Yukawa systems in liquid state
• Partial Clustering in Binary Two-Dimensional Colloidal Suspensions
• Reentrant transitions in colloidal or dusty plasma bilayers
• Large difference in the elastic properties of fcc and hcp hard-sphere crystals
• Transitions among crystal, glass, and liquid in a binary mixture with changing particle size ratio and temperature
• The effect of geometrical confinement on the interaction between charged colloidal suspensions
• Stable crystalline lattices in two-dimensional binary mixtures of dipolar particles
• Point Defect Dynamics in Two-Dimensional Colloidal Crystals
• Mobile particles in an immobile environment: Molecular Dynamics simulation of a binary Yukawa mixture
• Phase behaviour of a symmetrical binary fluid mixture
• Pair correlation functions and phase separation in a two component point Yukawa fluid
• Yukawa potentials in systems with partial periodic boundary conditions II : Lekner sums for quasi-two dimensional systems

Cited by in corpus (17)

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• Dynamics of two-dimensional complex plasmas in a magnetic field
• Crystal nuclei and structural correlations in two-dimensional colloidal mixtures: experiment versus simulation
• Infinite-pressure phase diagram of binary mixtures of (non)additive hard disks
• Collective Modes in Two Dimensional Binary Yukawa Systems
• Non-additivity of pair interactions in charged colloids
• Glass transition of charged particles in two-dimensional confinement
• Two-component mixture of charged particles confined in a channel: melting
• Dispersion relation of square lattice waves in a two-dimensional binary complex plasma
• How does a thermal binary crystal break under shear?
• Self-assembly of complex structures in colloid-polymer mixtures
• Elastic properties of mono- and polydisperse two-dimensional crystals of hard--core repulsive Yukawa particles
• Depinning and heterogeneous dynamics of colloidal crystal layers under shear flow
• Electrostatic repulsion-driven crystallization model arising from filament networks
• Crystallization in a one-dimensional periodic landscape
• Coupled dynamics in binary mixtures of colloidal Yukawa systems
• Separation of Wigner structures for 2D equimolar binary mixtures of Coulomb particles